Help, non-starting CDTi again!

smudge.g · 5th March 2020, 13:53

Well, after having changed the fuel pump again, the car started briefly, running fine but as soon as I stopped it and tried again a few minutes later, no power going to the pump (the black/green relay in passenger side fuse box is fine) so i am stumped why it worked once after refitting the pump, but not now!! any suggestion, maybe a duff sensor somewhere?? The car is no non-running and blocking our other car on the driveway doh!!!

trikey · 5th March 2020, 14:20

I would try a separate earth from the pump in case there is a break in the harness, you may have briefly reconnected a dodgy wire when moving the connector.

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smudge.g · 5th March 2020, 14:47

Thanks Trikey, tried that, no difference. I did apply 12v direct from the battery and this energises the pump, so I guess something 'upstream' of the pump is causing my issues.

smudge.g · 5th March 2020, 15:00

.......also, maybe stupid question but could I run the pump direct from the battery just to move the car to our other driveway or is it more complicated than this?

smudge.g · 5th March 2020, 15:48

quick update, I noticed that when trying to start it, all normal lights on dash except oil can.

disconnected battery fro 10mins, reconnected and fuel pump was running again. Left for a minute, oil can symbol now coming up on dash.....

....car started and running nomally again!!

so is there any relevance to the missing oil can symbol as before??

trikey · 5th March 2020, 15:56

Quote:

Originally Posted by smudge.g

quick update, I noticed that when trying to start it, all normal lights on dash except oil can.

disconnected battery fro 10mins, reconnected and fuel pump was running again. Left for a minute, oil can symbol now coming up on dash.....

....car started and running nomally again!!

so is there any relevance to the missing oil can symbol as before??

If the oil light isn’t on then it’s pointing to a dead ecu!

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smudge.g · 5th March 2020, 16:43

Quote:

Originally Posted by trikey

If the oil light isn’t on then it’s pointing to a dead ecu!

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But if it works again after 10mins disconnect????

I did notice a wee bit of water in the plenums when I checked this morning but I think it was just in the pipes rather than i the ecu compartment. All cleared now anyway.

trikey · 5th March 2020, 17:34

Failing fuel pump drivers on the circuit board would cause this

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BigRuss · 5th March 2020, 18:07

See how it goes but if it starts intermittently cutting out or not starting and the fuel pump not running drop me a pm.
I can test it for you and if it is faulty I can repair it for you or I have service exchange units in stock if necessary.

Russ

5th March 2020, 13:53	#1
smudge.g Gets stuck in 75 Tourer CDTi Connie SE Join Date: Jun 2017 Location: Keith, Banffshire Posts: 686 Thanks: 431 Thanked 132 Times in 105 Posts	Help, non-starting CDTi again! Well, after having changed the fuel pump again, the car started briefly, running fine but as soon as I stopped it and tried again a few minutes later, no power going to the pump (the black/green relay in passenger side fuse box is fine) so i am stumped why it worked once after refitting the pump, but not now!! any suggestion, maybe a duff sensor somewhere?? The car is no non-running and blocking our other car on the driveway doh!!! __________________ My 75 Tourer CDTi was born Saturday, 21st June 2003 @ 09:50 My 75 was the 18,749th 75 Tourer to run off the production line, out of 27,407 It was the 195th 75 Tourer CDT Connoisseur SE (135) to be made out of 2,074 and the 1,789th 75 Tourer in Wedgewood Blue Metallic (code: JEL) to be made out of 1,871 Wedgewood Blue Metallic 75 Tourers

5th March 2020, 14:20	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,765 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I would try a separate earth from the pump in case there is a break in the harness, you may have briefly reconnected a dodgy wire when moving the connector. Sent from my iPhone using Tapatalk __________________ Lest we forget..

5th March 2020, 14:47	#3
smudge.g Gets stuck in 75 Tourer CDTi Connie SE Join Date: Jun 2017 Location: Keith, Banffshire Posts: 686 Thanks: 431 Thanked 132 Times in 105 Posts	Thanks Trikey, tried that, no difference. I did apply 12v direct from the battery and this energises the pump, so I guess something 'upstream' of the pump is causing my issues. __________________ My 75 Tourer CDTi was born Saturday, 21st June 2003 @ 09:50 My 75 was the 18,749th 75 Tourer to run off the production line, out of 27,407 It was the 195th 75 Tourer CDT Connoisseur SE (135) to be made out of 2,074 and the 1,789th 75 Tourer in Wedgewood Blue Metallic (code: JEL) to be made out of 1,871 Wedgewood Blue Metallic 75 Tourers

5th March 2020, 15:00	#4
smudge.g Gets stuck in 75 Tourer CDTi Connie SE Join Date: Jun 2017 Location: Keith, Banffshire Posts: 686 Thanks: 431 Thanked 132 Times in 105 Posts	.......also, maybe stupid question but could I run the pump direct from the battery just to move the car to our other driveway or is it more complicated than this? __________________ My 75 Tourer CDTi was born Saturday, 21st June 2003 @ 09:50 My 75 was the 18,749th 75 Tourer to run off the production line, out of 27,407 It was the 195th 75 Tourer CDT Connoisseur SE (135) to be made out of 2,074 and the 1,789th 75 Tourer in Wedgewood Blue Metallic (code: JEL) to be made out of 1,871 Wedgewood Blue Metallic 75 Tourers

5th March 2020, 15:48	#5
smudge.g Gets stuck in 75 Tourer CDTi Connie SE Join Date: Jun 2017 Location: Keith, Banffshire Posts: 686 Thanks: 431 Thanked 132 Times in 105 Posts	quick update, I noticed that when trying to start it, all normal lights on dash except oil can. disconnected battery fro 10mins, reconnected and fuel pump was running again. Left for a minute, oil can symbol now coming up on dash..... ....car started and running nomally again!! so is there any relevance to the missing oil can symbol as before?? __________________ My 75 Tourer CDTi was born Saturday, 21st June 2003 @ 09:50 My 75 was the 18,749th 75 Tourer to run off the production line, out of 27,407 It was the 195th 75 Tourer CDT Connoisseur SE (135) to be made out of 2,074 and the 1,789th 75 Tourer in Wedgewood Blue Metallic (code: JEL) to be made out of 1,871 Wedgewood Blue Metallic 75 Tourers

5th March 2020, 17:34	#8
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,765 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Failing fuel pump drivers on the circuit board would cause this Sent from my iPhone using Tapatalk __________________ Lest we forget..

5th March 2020, 18:07	#9
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	See how it goes but if it starts intermittently cutting out or not starting and the fuel pump not running drop me a pm. I can test it for you and if it is faulty I can repair it for you or I have service exchange units in stock if necessary. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.